In case you haven't found the root cause yet, this is a bug slightly different from the one quoted by Andre. You may want to watch the following 2 tickets (Duplicate of each other) for future updates. They contain several workarounds as well:
Hello Insight users, As part of our (Mindville's) acquisition by Atlassian, our training team is looking to build some new Insight training materials. It would really helpful if you can ...
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